The difference between quartize and marble?
I have a prob. at school.
a quartzite and a marble are both white and looks exactly the same. I know quartzite is just quart metamorphed and marble is the same where as marble consists of calcite.
However, i put acid on the marble and the calcite did not react and fizz. Bu even stranger is the marble and the quarts both scratch glass.
I cannot tell the diff. between two white/crystal looking minerals of quartzite and marble plz help.
Thanks
White marble and white quartzite may look similar superficially, but they
are actually very different and easy to tell apart.
1. Quartzite is harder and will scratch glass. Marble will not.
2. marble will fizz gently in dilute (10%) hydrochloric acid. You may need
to scratch the surface, and look at it with a hand lens. Be careful. Even
dilute acid can hurt your eyes and rot your clothing.
These are just two of the obvious differences. Marble is made of calcite or
dolomite (or both) and quartzite is made of quartz. The crystals of these
three minerals have different shapes, and the quartz crystals are shinier.
You can find out more about telling the differences among minerals with an
introductory college level mineralogy textbook. Some books for mineral
collectors are also helpful.
Hope this helps.
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